| The objective of this work was the comparison of vegetation structure of two Caatinga fragments with primary and secondary levels of ecological succession, located at Embrapa Semiarido, Petrolina, State of Pernambuco, Brazil. For floristic survey it was used the method of plots, where 10 sampling units of 8 m x 40 m randomly distributed were plotted. All living individuals with diameter at ground level (DGL) ≥ 3 cm were inventoried and also measured their total heights. We observed significant differences in the diametric structure, but the distribution of hypsometric frequency showed that the majority of individuals in both areas were small-sized (< 5 m). Through similarity analysis and principal coordinates, we observed the formation of three distinct... |
